While many other ultrabook manufacturers go for the aluminum casing look of Apple's MacBook Air, Lenovo is sticking to its timeless ThinkPad design, only making it thinner and lighter. The company on Tuesday unveiled the 14-inch ThinkPad X1 Carbon, an updated X1 ultrabook made of carbon fiber.http://feeds.feedburner.com/~r/wired/index/~4/gY01DS-Dhoo